Tools, Equipment & Components › CA3081 - Used on Bally Solenoid driver board (and others) Image 1 of 1 CA3081 - Used on Bally Solenoid driver board (and others) £2.50 Transistor array, as used on the Bally solenoid driver board. Obsolete IC. New old stock - tested and working. Quantity: Add To Cart Added! Transistor array, as used on the Bally solenoid driver board. Obsolete IC. New old stock - tested and working. You Might Also Like Eproms! from £1.75 TO-39 Heat Sink £2.00 2n3440 - Bally high voltage section £2.50 500 Mixed Components £5.00